Results 11 to 20 of about 40 (40)

Elliptic arrangements of complex multiplication type

Forum of Mathematics, Sigma
We provide a natural definition of an elliptic arrangement, extending the classical framework to an elliptic curve $\mathcal {E}$ with complex multiplication.
Luca Moci, Roberto Pagaria, Maddalena Pismataro, Alejandro Vargas   +3 more
doaj   +1 more source

Vines and MAT-labeled graphs

Forum of Mathematics, Sigma
The present paper explores a connection between two concepts arising from different fields of mathematics. The first concept, called vine, is a graphical model for dependent random variables.
Hung Manh Tran, Tan Nhat Tran, Shuhei Tsujie   +2 more
doaj   +1 more source

Forbidden induced subgraphs for graphs and signed graphs with eigenvalues bounded from below

Forum of Mathematics, Sigma
The smallest eigenvalue of a graph is the smallest eigenvalue of its adjacency matrix. We show that the family of graphs with smallest eigenvalue at least $-\lambda $ can be defined by a finite set of forbidden induced subgraphs if and only if
Zilin Jiang, Alexandr Polyanskii
doaj   +1 more source

When Grünbaum meets Poncelet: infinite classes of movable (n4) $(n_4)$ left parenthesis n 4 right parenthesis configurations

Forum of Mathematics, Sigma
We study relations between (n4) $(n_4)$ left parenthesis n 4 right parenthesis incidence configurations and the classical Poncelet Porism. Poncelet’s result concerns two conics and a sequence of points and lines that inscribes one conic and ...
Leah Wrenn Berman, Gábor Gévay, Jürgen Richter-Gebert, Serge Tabachnikov   +3 more
doaj   +1 more source

Polymatroids and moduli of points in flags

Forum of Mathematics, Sigma
We introduce and study different compactifications of the moduli space of n distinct weighted labeled points in a flag of affine spaces. We construct these spaces via the weighted and generalized Fulton-MacPherson compactifications of Routis and Kim-Sato.
Patricio Gallardo, Javier González-Anaya, Jose Gonzalez   +2 more
doaj   +1 more source

Connectivity of Triangulation Flip Graphs in the Plane. [PDF]

Discrete Comput Geom, 2022
Wagner U, Welzl E.
europepmc   +1 more source

On the diffeomorphic type of the complement to a line arrangement in a projective plane

Open Mathematics, 2012
Bogomolov Fedor, Kulikov Viktor
doaj   +1 more source

On Sets Defining Few Ordinary Circles. [PDF]

Discrete Comput Geom, 2018
Lin A, Makhul M, Mojarrad HN, Schicho J, Swanepoel K, de Zeeuw F.   +5 more
europepmc   +1 more source

Peeling Sequences. [PDF]

Discrete Comput Geom
Dumitrescu A, Tóth G.
europepmc   +1 more source

Deep Cliques in Point Sets. [PDF]

Discrete Comput Geom
Langerman S, Mydlarz M, Welzl E.
europepmc   +1 more source